ADDENDUM NO. 1. PROJECT: Lowell High School DATE: January 28, Eucalyptus Drive, SF, CA 94132

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1 SAN FRANCISCO UNIFIED SCHOOL DISTRICT 2011 PROPOSITION A BOND PROGRAM LOWELL HIGH SCHOOL PROJECT #11493 INTERIM HOUSING for VOLUNTARY SEISMIC STRENTHENING ADDENDUM NO. 1 PROJECT: Lowell High School DATE: January 28, Eucalyptus Drive, SF, CA OWNER: San Francisco Unified School District DSA FILE NO.: 38- H1 135 Van Ness Avenue San Francisco, CA DSA APL.NO.: Notice is hereby given to all prospective bidders that plans and specifications on the subject project are modified as hereinafter set forth. This Addendum shall be attached to and form a part of the plans and specifications. All bidders must acknowledge receipt of this addendum on the Bid Form. In case of difference with previous addenda or communications, this addendum takes precedence. It is the responsibility of all bidders to notify all subcontractors from whom they request bids and from whom they accept bids of all changes contained in this addendum. PROJECT MANUAL VOLUME 2 OF 4 Item No. PM-1. Reference: Section Project Labor Agreement, Article XII, Section 5 Employment of Interns. Description: Replace paragraph (b) of Article XII, section 5 with the new paragraph (b) below: (b) Interns shall be paid the California minimum wage. To cover intern wages, each Prime Contractor performing work under the Agreement shall contribute $1,240 (twelve hundred forty dollars) to be deposited in a fund to be maintained by the District at a time to be determined but not prior to the Notice to Proceed. District representatives of the Facilities, College and Career Readiness, and Human Resources Departments shall determine this amount in advance of project bidding, and the Facilities Department shall state it and the date of its payment in bid specifications for each project. The obligation of each Prime Contractor to contribute for intern wages is independent of placement of an intern in the Prime Contractor's project office and of scheduling of the Prime Contractor's work under the Agreement. Item No. PM-2. Item No. PM-3. Item No. PM-4. Reference: Section Project Labor Agreement Description: Replace pages 40 through 50 of this section with the attached pages. These are the signature pages with the signatures. Reference: Section Project Labor Agreement Letter of Assent Description: Replace entire section with attached section. Reference: Section Construction Facilities Description: Replace entire section with attached section. Addendum 1 Page 1 of 7 Project 11493

2 ARCHITECTURAL DRAWINGS VOLUME 1 OF 4 Item No. AD-1. Reference: A0.00 Description: Sheet Index, add S3.01A Unit 4&5 Wall Elevation No 1A. Item No. AD-2. Reference: A0.01 Description: Add Alternate 3 description from specifications. Item No. AD-3. Reference: A1.01 Description: Revise construction staging areas per ASK 001. Add the following to the keynote list: contractor to obtain city permit for access over sidewalk temporary access road- remove stump and bush- relocate small tree- install 4" base rock over filter cloth 14'-0" wide- upon completion remove road- scarify 6" and spread 2" wood mulch. protect drip irrigation contractor staging area- provide fence enclosure- restore planting and other project related damage Item No. AD-4. Reference: A1.11 Description: Removed instead of salvaged lockers on west wall of corridor 100C. Revise demolition work in room 131 per ASK 002. Add general note: provide construction barriers at the center of Unit 5 corridor and 12 from the new shear wall locations per specification section Item No. AD-5. Reference: A1.12 Description: Add general note: provide construction barriers at the center of Unit 5 corridor and 12 from the new shear wall locations per specification section Item No. AD-6. Reference: A1.13 Description: Add general note: provide construction barriers at the center of Unit 5 corridor and at 12 from the new shear wall locations per specification section Item No. AD-7. Reference: A1.17 Description: Remove keynote remove lights. Add keynote remove curtain track on the entire length of the building. Item No. AD-8. Reference: A2.11 Description: Add general note: for location and quantity of whiteboards and tackboards see interior elevations. Add keynote reinstall lockers from storage and keynote install new lockers. On floor plan add note to two (2) double lockers units next to door 130 and 15 double locker units on the west wall of 100C. On floor plan add note to 24 double lockers units on the west wall of 100C. Revise cabinet layout in room 131 per ASK 003. Item No. AD-9. Reference: A2.12 Description: Add general note: for location and quantity of whiteboards and tackboards see interior elevations. Removed keynotes related to installation of whiteboards and tackboards. Addendum 1 Page 2 of 7 Project 11493

3 Item No. AD-10. Reference: A2.13 Description: Add general note: for location and quantity of whiteboards and tackboards see interior elevations. Removed keynote build (n) wall in same location as demolished wall. Instead refer to legend for new walls. Item No. AD-11. Reference: A3.11 Description: On west elevation correct column at line DD per ASK 004. On east elevation change keynote tag from to On In keynote list delete notes and Change wording of keynote to read paint exposed concrete columns and horizontal beams on three sides at all levels-alternate 1. Item No. AD-12. Reference: A3.12 Description: Replace entire sheet with the attached sheet. Generally the revisions are: Added keynote concrete column. Added specific indications of concrete repair locations and added related legends with structural details referred. Added operable sash with keynote and legend. Change wording of keynote to read paint exposed concrete columns and horizontal beams on three sides at all elevations-alternate 1. Revised indication for locations of keynote provide shades. Item No. AD-13. Reference: A3.13 Description: Change wording of keynote to read paint exposed concrete columns and horizontal beams on three sides at all levels-alternate 1. Item No. AD-14. Reference: A4.01 removal and installation in plans 1 and 4, revised keynotes and legend. Item No. AD-15. Reference: A4.02 removal and installation in plan 1 and 2, revised keynotes and legend. Item No. AD-16. Reference: A4.03 removal and installation in plan 1 and 2, revised keynotes and legend. Item No. AD-17. Reference: A4.04 removal and installation in plan 1 and 2, revised keynotes and legend. Item No. AD-18. Reference: A5.11 through A5.18 (whiteboard and tackboard changes) Description: It is acceptable to scale the whiteboard and tackboard shown on the interior elevations to the nearest standard product size, which are in 24 increments. Elevation 4/A5.16 change keynote to Elevation 12&13/A5.17 change keynote to Add a combination whiteboard/tackboard to elevation 2/A5.16 same as shown in 1/A5.15. Add 12 x 4 whiteboard to the following elevations: 12/A5.12, 19/A5.15, 1/A5.16, 7/A5.16, 10/A5.17 Add 8 x 4 whiteboard to the following elevations: 9/A5.12 (2 boards), 2/A5.13, 6/A5.13 Add 6 x 4 whiteboard to the following elevations: 8/A5.12, 9/A5.13, 5/A5.14, 6/A5.14, 6/A5.18, 10/A5.18 Addendum 1 Page 3 of 7 Project 11493

4 Change whiteboard/tackboard combination to two (2) 12 x 4 tackboard on the following elevation: 1/A5.15 Item No. AD-19. Reference: A5.11 through A5.18 (generally revisions to the cabinets) Description: Revise the following interior elevations: 14, 15, 16 & 17/A5.11 per ASK 005A&B. Add to keynote list remove cabinet, (n) cabinet and relocate (e) cabinet. 1, 2, 3 &4/A5.12 per ASK 006A&B. Add to keynote list (e) cabinet to remain, field cut (e) cabinet and (n) filler panel. 15 & 17/A5.15 per ASK 007. Add to keynote list (e) cabinet to remain, install (n) base cabinet and lab top and (e) sink cabinet with knee space. 3 & 9/A5.16 per ASK 008 & 009. Add to keynote list opening in shearwall, see 1/A9.01, SSD, reinstall (e) cabinets, sand and refinish exterior reinstall salvaged cabinet, lab top, sink and fittings, and (see wording above). 6 & 7/A5.17 per ASK 010. Add to keynote list 01.52, (see wording above) and fumehood to remain, protect. 3/A5.18 per ASK 011. Add to keynote list and (see wording above). Item No. AD-20. Reference: A5.12 Description: Add keynote remove glass salvage wood stops. Add keynote install ½ white birch plywood-clear finish facing room 131-cut and reinstall stops. Add keynote install tackboard on plywood-tight to stops-no frame. On elevation 7/A5.12 add keynotes 01.69, and to the eight (8) interior windows. Item No. AD-21. Reference: A5.16 Description: On elevation 13/A5.16 change keynote to Item No. AD-22. Reference: A5.17 Description: On elevation 3/A5.17 change keynote to Add keynote list install louver in top portion of window SMD On elevation 5/A5.17 change keynote to and add keynote Item No. AD-23. Reference: A6.11 through A6.13 Description: Add ceiling fans in the same locations as shown in ESK 001 through 010. Item No. AD-24. Reference: A6.13 Description: In room 333A change note 5.17 to Add keynote 5.18 (e) duct up through roof. Item No. AD-25. Reference: A9.01 Description: Revise details 1 ASK 012. Add detail 4, Operable Window Sash Insert per ASK 013. Add note on detail 2 that birch plywood shall have a clear finish. Item No. AD-26. Reference: A9.04 Description: Add detail 14, Ceiling Fan Mounting, per ASK 014 Addendum 1 Page 4 of 7 Project 11493

5 Item No. AD-27. Reference: A9.07 Description: Added cabinet details 12, 13 and 14 per ASK 015 and 016. STRUCTURAL DRAWINGS VOLUME 1 OF 4 Item No. SD-1. Reference: S0.01 Description: Add notes Existing Concrete Surface Preparation per SSK 001. Revise notes under Material Data-Concrete per SSK 002. Add to sheet index S3.01a Unit 4&5 Wall Elevation No 1A Item No. SD-2. Reference: S1.01 Description: Change note on detail 9/S1.01 from 5 concrete slab on grade w/ 24 oc ea way to w/ 18 oc ea way. Item No. SD-3. Reference: S2.01 through S2.04 Description: At the 2 shear walls on line JJ change strengthening note A1 to A3. Add to Strengthening Legend: A3 Description Concrete Shearwall, Remark 12 Thick Shearwall See Elevation Sheet S3.01A. Item No. SD-4. Reference: S2.03 Description: On line BB between lines 38 and 39, change note on detail tag E/S5.01 from Sim 4 - #4 Long to Sim 4 - #9 Long. Item No. SD-5. Reference: S3.01 Description: Replace entire sheet with the attached sheet. Changes shear wall elevation to apply only to walls on line BB. Revises details. Item No. SD-6. Reference: S3.01A Description: Add attached sheet to set. Adds shear wall elevation for walls on line JJ. Item No. SD-7. Reference: S4.01 Description: Replace entire sheet with the attached sheet. Details revised. Generally changes are regarding reinforcing. Item No. SD-8. Reference: S5.01 Description: Replace entire sheet with the attached sheet. Details revised. Generally changes are regarding reinforcing. Item No. SD-9. Reference: S5.02 Description: Replace entire sheet with the attached sheet. Details revised. Generally changes are regarding reinforcing. Item No. SD-10. Reference: S5.03 Description: Revised note 2 on detail 1/S5.03 to read wire brush or sandblast reinf. to sound material & intentionally roughen surface MECHANICAL DRAWINGS VOLUME 1 OF 4 Item No. MD-1 Reference: MP0.01 Description: Add the following General Mechanical Note: 25. Per the phasing of the project the contractor shall provide temporary heating lines around the construction areas to provide uninterrupted heating to the occupied Addendum 1 Page 5 of 7 Project 11493

6 spaces. A temporary line shall be insulted per specifications if it is exposed in a occupied room. ELECTRICAL DRAWINGS VOLUME 1 OF 4 Item No. ED-1. Reference: E0.01 Description: Add to fixture schedule: E: Manufacturer-Dayton; Catalog No. 5NPZ7; Lamping-None; Voltage-277, Max VA- None; Note-Fan weights 16 pounds. Furnish and install with Dayton Speed Controller 1AGV2 for fan control. S.A.D. for Fan Mounting. Item No. ED-2. Reference: E1.11 Description: Add sheet note 4: demolish existing power feed to lighting fixture row. extend and reconnect with surface conduit. control and power conductors to remaining fixtures. Add sheet notes 4 to room 135 at the three (3) fixtures to be removed and salvaged. Item No. ED-3. Reference: E1.11 through E1.13 Description: Add sheet note 3: demolish <e> light switch and remove conductors to first lighting junction box for installation of new fan control and power. see E2.11 through E2.13 for scope of new work. Add sheet notes 3 at main light(s) switch in rooms: 133, 134, 135, 141, 233, 234, 241, 244, 339 and 344. Item No. ED-4. Reference: E2.11 through E2.13 Description: Add ceiling fan E to rooms 133, 134, 135, 141, 233, 234, 241, 244, 339 and 344. per ESK 001 through 009. Add sheet note 3 furnish and install four-inch square surface box for new light switch and new fan speed controller. controller shall be rated for 277v. provide new wiring to junction box. Add sheet note 4 furnish and install new surface mount box for power feed to new fan. shorten or replace existing stem mount for existing light fixture so that it can be mounted at new surface box. Add sheet note 5 furnish and install new single channel surface raceway for power to new fan. see architectural drawings for exact location of fan prior to rough in. Item No. ED-5. Reference: E1.13 Description: Revise electrical plan for room 334 per ESK 010. ARCHITECTURAL DRAWINGS VOLUME 3 OF 4 Item No. ED-6. Reference: A1.01 Description: Replace entire sheet with the attached sheet. In general revises site demolition, building layout and paving patches. ELECTRICAL DRAWINGS VOLUME 3 OF 4 Item No. ED-7. Reference: E0.01 Description: Replace entire sheet with the attached sheet. Revises the data and power routing and locations. END OF ADDENDUM ITEMS Addendum 1 Page 6 of 7 Project 11493

7 ATTACHMENTS: SPECIFICATIONS VOLUME 2 OF 4: (replacement pages with footer Addendum 1 ) Project Labor Agreement, pages 40 through Project Labor Agreement Letter of Assent Construction Facilities DRAWINGS VOLUME 1 OF 4: (replacement sheets with title block Addendum A1 ) ARCHITECTURAL ASK 001 through 016 A3.12 Unit 4 & 5 Elevations A4.01 Enlarged Plans A4.02 Enlarged Plans A4.03 Enlarged Plans A4.04 Enlarged Plans STRUCTURAL SSK 001 and 002 S3.01 Unit 4 & 5 Wall Elevation No. 1 S3.01A Unit 4 & 5 Wall Elevation No. 1A S4.01 Unit 4 & 5 Foundation Details S5.01 Units 4 & 5 Framing Details no. 1 S5.02 Unit 4 & 5 Framing Details no. 2 ELECTRICAL ESK 001 through 010 DRAWINGS VOLUME 3 OF 4: (replacement sheets with title block Addendum A1 ) ARCHITECTURAL ELECTRICAL A1.01 Enlarge Plan and Details E2.01 Enlarge Electrical Plan END OF ADDENDUM Addendum 1 Page 7 of 7 Project 11493